The operations (S exp. 2)Psi and (S exp. plus or minus) Psi, in which Psi is an exact eigenfunction obtained by Bethe for the linear chain of localized spins, are discussed. The above operations are the usual square of the total angular momentum and the r Topic: Ferromagnetism.
The significance of dimensionality in the magnetic properties of a single domain ferromagnetic system is determined utilizing a new approach to the spin wave theory and a few plausible assumptions.If conditions are such as to produce spontaneous magnetiza Topics: Ferromagnetism., Spin waves.